168267200081 has 8 divisors (see below), whose sum is σ = 178198837344. Its totient is φ = 158339292480.

The previous prime is 168267200077. The next prime is 168267200099. The reversal of 168267200081 is 180002762861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168267200081 - 2² = 168267200077 is a prime.

It is a super-2 number, since 2×168267200081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168267200021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839255 + ... + 1020236.

It is an arithmetic number, because the mean of its divisors is an integer number (22274854668).

Almost surely, 2^168267200081 is an apocalyptic number.

It is an amenable number.

168267200081 is a deficient number, since it is larger than the sum of its proper divisors (9931637263).

168267200081 is a wasteful number, since it uses less digits than its factorization.

168267200081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864831.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 168267200081 in words is "one hundred sixty-eight billion, two hundred sixty-seven million, two hundred thousand, eighty-one".